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Top Technologies

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Web Frameworks

29 prolific.co Last Updated: 10 months

Success 54% of passed verification steps
Warning 23% of total warning
Errors 23% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 87%
Best Practices Desktop Score 92%
SEO Desktop Score 91%
Progressive Web App Desktop Score 35%
Performance Mobile Score 41%
Best Practices Mobile Score 92%
SEO Mobile Score 88%
Progressive Web App Mobile Score 37%
Page Authority Authority 0%
Domain Authority Domain Authority 0%
Moz Rank 0.0/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 73 Characters
PROLIFIC | ONLINE PARTICIPANT RECRUITMENT FOR SURVEYS AND MARKET RESEARCH
Meta Description 152 Characters
On-demand, self-service data collection. Prolific helps you recruit high quality research participants to take part in your study, survey or experiment.
Effective URL 23 Characters
https://www.prolific.co
Excerpt Page content
Prolific | Online participant recruitment for surveys and market research About How it works Participants Pricing Contact Login ...
Keywords Cloud Density
participants17 prolific16 research12 quality8 data7 find7 more6 participant5 read5 study5
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
participants 17
prolific 16
research 12
quality 8
data 7
find 7
more 6
participant 5
read 5
study 5
Google Preview Your look like this in google search result
PROLIFIC | ONLINE PARTICIPANT RECRUITMENT FOR SURVEYS AND MA
https://www.prolific.co
On-demand, self-service data collection. Prolific helps you recruit high quality research participants to take part in your study, survey or experimen
Robots.txt File Detected
Sitemap.xml File Detected
Page Size Code & Text Ratio
Document Size: ~37.99 KB
Code Size: ~30.39 KB
Text Size: ~7.6 KB Ratio: 20.01%

Estimation Traffic and Earnings

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Desktop

Desktop Screenshot
Server response times are low (TTFB) Root document took 160 ms
Time To First Byte identifies the time at which your server sends a response
Minimize third-party usage Third-party code blocked the main thread for 0 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Total Blocking Time 30 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.2 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Defer offscreen images Potential savings of 1,092 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Server Backend Latencies 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Properly size images Potential savings of 989 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 1.4 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.5 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).
Avoids enormous network payloads Total size was 1,794 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.8 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 10 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Avoids an excessive DOM size 439 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
First Meaningful Paint 1.1 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 68 requests • 1,794 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 3 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 90 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 3.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Network Round Trip Times 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Page load is not fast enough on mobile networks Interactive on simulated mobile network at 12.1 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 10 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Remove unused CSS Potential savings of 14 KB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Serve images in next-gen formats Potential savings of 689 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption

Mobile

Mobile Screenshot
Total Blocking Time 270 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 1.0 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Server Backend Latencies 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Defer offscreen images Potential savings of 1,165 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Properly size images Potential savings of 941 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 6.0 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 6.0 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).
Avoids enormous network payloads Total size was 1,752 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 3.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 3.5 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 10 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Avoids an excessive DOM size 439 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
First Meaningful Paint 4.3 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 68 requests • 1,752 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 3 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 250 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 11.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Network Round Trip Times 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Page load is not fast enough on mobile networks Interactive at 11.8 s
A fast page load over a cellular network ensures a good mobile user experience
First Contentful Paint (3G) 7305 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Estimated Input Latency 30 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Tap targets are not sized appropriately 44% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements
Document uses legible font sizes 100% legible text
Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px
Remove unused CSS Potential savings of 14 KB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Serve images in next-gen formats Potential savings of 689 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Server response times are low (TTFB) Root document took 120 ms
Time To First Byte identifies the time at which your server sends a response
Minimize third-party usage Third-party code blocked the main thread for 90 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading

Speed And Optimization Tips

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Alexa Rank

0

Local Rank: / Users: / PageViews:

Global Rank

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/1.1 200 OK
Server: openresty/1.15.8.2
Date: Tue, 24 Dec 2019 13:01:32 GMT
Content-Type: text/html
Last-Modified: Tue, 17 Dec 2019 16:28:12 GMT
Vary: Accept-Encoding
ETag: W/"5df9021c-97f2"
X-Frame-Options: ALLOW-FROM https://prolific.co/
Content-Security-Policy: frame-ancestors https://*.prolific.co http://*.prolific.co https://prolific.co
Content-Encoding: gzip
X-Request-ID: 260f878dbde05797945283d94ec4c3a1
Via: 1.1 google
Transfer-Encoding: chunked
Alt-Svc: clear
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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